SOLUTION: A bookstore reduced the price of a book with 25%. After that the sale rose by 10%. With how many percent rose the number of sold books? isn't simply 10% ?

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Question 430043: A bookstore reduced the price of a book with 25%. After that the sale rose by 10%.
With how many percent rose the number of sold books?
isn't simply 10% ?

Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
If the price of a book is reduced by 25%, then the book costs 75% of what it previously did. Raising that discounted price by 10%, you get the book costs 1.1
times the price of its after sale price. Thus the book costs 1.1(.75),or 82.5% of its original price.